Device for use in connection with velocity-indicators.



E. B. SANBORN.

DEVICE FOR USE IN CONNECTION WITH VELOGITY INDICATORS.

APPLICATION FILED 1120.29, 1910.

Patented June 9, 1914 l rvwjevv'fiar.

FICE.

FRANK J3. SANBORN, 0F CAMBRIDGE, MASSACHUSETTS.

DEVICE FOR USE IN CONNECTION WITH VELOCITY-INDICATORS.

Specification of Letters Patent.

Application filed December 29, 1910. Serial No. 599,875.

To all whom it may concern Be it known that I, FRANK B. SANnoRN, a citizen of the United States, and a resi dent of Cambridge, in the county of MiddleseX and State of Massachusetts, have invented certain new and useful Improvements in Devices for Use in Connection with VelocityIndicators.

My invention relates to a device for receiving and transmitting dynamic fluid pressure that is due to the velocity of a fluid relative to a stationary or moving ob- 'ect. 1 One important function of the invention is to provide a device that will receive and transmit accurately the pressure of water that is caused by a rnoving boat, thus to enable the speed of the boat to be indicated.

Another object of the invention is to enable the velocity of water that is flowing relatively to a boat at anchor to be similarly indicated; it will likewise indicate the velocity of water that is flowing relatively to any stationary structure whereto the device may be attached.

Another object of the invention is to provide a device that will receive and transmit accurately the pressure of a fluid due to its relative velocity, and at the same time one that will not easily become inoperative on,

account of obstructions due to grass, seaweed, or floating debris; and furthermore to provide a device such that, perchance it becomes obstructed, it can be freed of such obstructions without disconnecting pipes or attachments, or removing any of its parts.

Another object of the invention is to provide a device that can be readily attached to the bottom of a boat evenwhile the boat is floatingin water. And finally it is important that the whole device shall cause no material obstruction to the free flow of water past or relative to, the device.

Other objects of the invention will be apparent from the following description and reference to the accompanying drawings which form a part of this specification.

Figure 1 is a longitudinal vertical section, partly in elevation, showing one embodiment of my present invention. Fig.2 is a front end elevation of the device. Fig. 3 is a modified formof the valve and seat of member A which is shown in Figs. 1 and 2. Fig. 4: is a plan view when a portion has beenremoved leaving the body portion and its associated curved tube and connecting pipe. Fig. 5 is a side elevation of the portion shown in Fig. 4.

The body portion or supporting and protecting member 10 of the device is shownlin Figs. 1, 2, 4 and 5. Associated with this body portion is the shoulder 11., the tube 12, the pipe 13, the clearing member or ejector A and the outlet T or member l i. The body portion serves as a support for the curved tube 12 and by extending beyond the tube as shown in Fig. 1 the body portion gives protection to the tube against the impact of water floating substances, mud, or shoals. The bent tube 12 has the approximate form shown in Figs. 1 and 5. hen in operation water or fluid enters this tube, fills it as well as the pipe 13, the outlet T or member 1 1, and the pipe or tube connects to some form of gage or indicating means which can be of any particular form or variety and is therefore not shown herein.

Through the tube 12 and the pipe 13 passes a clearing member or ejector A that is composed of the parts 15 and 16. This member serves specifically for freeing the tube 12 of possible obstructions. dinarily in the position shown in Fig. 1 and its adjustable handle 21 is then in the vertical position shown in Figs. 1 and 2, but

when this member is needed for the purpose of removing possible. obstructions in the tube 12, then the handle is brought approximately into a horizontal position as shown in Fig. 1 where it can be easily grasped in the hand; pressure applied to the handle will force the member along the tube so that the end of the clearing member will extend out through the tube as shown in Fig. 1., thus rcmovingany obstructions that may have existed. ing member A is provided with a conical shoulder 17 which engages with the seat 18 when the member is forced down and thus the inflow of water or other fluid can be shut off.

In order to prevent leakage of water or other fluid from the chamber through which Patented J une 9, 1914.

It is or-l F urthermore the clear- 1 the member A operates and along said inemthreaded joint at the end of the pipe 13;'

the nut 22 and the washer '23 are also removed. The body portion 10 with its associated parts 11, 12 and 13 as shown in Fig. 5 is then ready for attachment to the boat.

A hole about one-half inch in diameter isv bored through the shell 24 of the boat and at a point preferably near amidship's, a few inches away from the keel. The inflow of water is partly stopped by holding a finger over the hole or by inserting a temporary; plug; then a strong piece of twine, as a codi the outside of the boat. The loose end of the twine, or chain, is thendrawn above the water surface and theportion of the device shown in Fig. 5 is attached thereto. The attachment is madeby fastening an end of the twine, or chaih,'inside the pipe 13- or by passing the twine or chain through the pipe 13 and the tube 12 and then merely tying a knot or inserting in the knot a nail or small cross-bar of metal orstonejso as to aid later in removing from the tube the cut or broken end of the twine or chain. As soon as the twine, or chain, has been attached the parts are lowered into the water and the other end of the twine or chain is pulled into the boat 13, are placed forward,- toward the bow. When the device is in this position the end of the curved tube 12will face toward the bow and will receive the pressure of water that is moving relatively to the boat.

In the case of boats with wooden shells, suchfas most motor boats have, when nut '22 1 is being tightened, it will facilitate the ad justment to pull the pipe 13 and at the same time to rock the parts slightly forward and backward 'so that thepoints 25 25 25 will be quickly indented into the wood and the device brought to a rigid position. Also when the nut 22 is firmly tightened the shoulder 11, which is slightly cup-shaped First, the.

fish line, or a small chain is lowered through the hole (which may still be kept partlyi closed by a finger, or a plug) until it can be' reached by a boat hook or a grapple, from:

and has a circular edge, will be indented into the wood and by this means will form a water-tight joint.

Either before, or after the nut 22 is in final position, the twine, or chain, may be cut or broken and the portion of it that is within the pipe and tube may be allowed to fall downwardinto the water; the remaining parts of the device can then be connected and any inflow of water stopped. The portion 16 of the clearing member A is made'of material that is springy and will easily pass through the tube 12 whichis made of smooth tubing. The outlet T or member 14 has an inside thread which fits the outside thread of the pipe 13 and when this T or "member has been turned into place,the clearing member can be put into its normal position by causing the handle 21 to drop into the fp'osition shown in F igs. 1 and 2.

The *total time for making the above described attachment which may include the time for boring a hole through the boat, attaching the tw ne, or chain, pulling the parts into place, tightening the nut on the inlet pipe, .inserting the clearing member and screwing on the outlet Twill rarely be more than fifteen minutes andduring the process only a few gallons of water need to leak into the boat. v V

I have endeavored to give in the foregoing paragraphs a complete and exact description of the method of operation of my comprising a curved tube and a body portion with a reduced edge that lies ina plane substantially parallel with a plane through the axis of the bent tube and said body portion extending beyond the tube in opposite directions.

' 2.7A testing apparatus for use in'connection with velocity indicators comprisinga body portion provided with'a reduced edge. that serves as a cut-Water or divider and with a projecting shoulder and associated with said body-portion ;a curved tube that passes through the shoulder which forms a support when drawn against a surface of wood or-yieldable material.

3. A testing apparatus comprising a outwater, and an inlet tube, provided with a cup-shaped shoulder witha projecting edge that'form's a water-tight joint when indented in 'wood or yieldable material. s

4. A velocity indicator comprising. a plate and an inlet tube, 'the tube having an open end protected against the entrance of solid invention and the method ofattaching the material by an edge of the plate that extends beyond the tube.

5. A velocity indicator comprising an inlet tube and a deflector having an edge situated in advance of the inlet tube and being inclined past the tube opening.

6. A velocity indicator comprisin an inlet tube, arranged to open in the direction oi progress, and. a plate situated in advance of the inlet tube and having its forward edge inclined downwardly toward the tube opening.

7. A velocity indicator for use in connection with boats comprising an inlet tube adapted to extend inside and outside the hull of the boat, an ejector in the tube movable through the outer end thereof, and means for actuating the ejector situated at the inner end of the tube.

8. A velocity indicator comprising a outwater, an inlet tube associated therewith, an ejector therein, a handle for actuating the ejector and operable from without the tube.

9. A velocity indicator comprising an inlet tube, an ejector operable from without the tube, and indicating means for showing the position of the ejector and for retaining the ejector in position.

10. A velocity indicator comprising an inlet tube and a clearing device that has means for closing the tube, said device operating to clear the tube upon the closure thereof.

11. A testing. apparatus for use in. connection with velocity indicators comprising a cut-water, an inlet tube associated therewith, and a combined ejector and shut-ofi' valve cooperating with the inlet tube.

12. In a velocity indicator for use in connection with boats, the combination with a plate, ofmeans for fixing the plate to a boat substantially at right angles to the hull, and an inlet tube carried by the plate.

13. In a velocity indicator for use in connection with boats, the combination with a plate, of means for fixing the plate to a boat in a definite position, and an inlet tube carried by the plate extending first outwardly from the hull and then forwardly to an opening within the area of said plate.

14. la a velocity indicator, a plate having means for securing it with an edge engagin the hull of a boat, and an inlet tube mounte upon one side of the plate.

15. In a velocity indicator, a triangular plate, means along one edge of the late for securing it to the hull of a boat, an an inlet tube extending from said edge toward an apex of the plate.

16. In a velocity indicator, the combination with a body portion, having an annular shoulder, of an inlet tube extending from the shoulder along the body portion.

17. In a velocity indicator, the combination with a body portion, of an annular shoulder, and an inlet tube extending from the shoulder alon the body portion, the body portion and s ioulder having means for engaging the hull of a boat.

18. In a velocity indicator, the combination with a body portion, of an annular shoulder, an inlet tube extending from the shoulder along the body portion, and a pipe engaging. the shoulder at the opposite side from the inlet tube.

FRANK B. SANBORN.

Witnesses:

ARTHUR F. RANDALL, LUCIUS B. WEYMOUTH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

